16840474 has 16 divisors (see below), whose sum is σ = 29865600. Its totient is φ = 6968304.

The previous prime is 16840469. The next prime is 16840493. The reversal of 16840474 is 47404861.

16840474 = 181² + 182² + ... + 383².

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20334 + ... + 21145.

It is an arithmetic number, because the mean of its divisors is an integer number (1866600).

Almost surely, 2^16840474 is an apocalyptic number.

16840474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16840474 is a deficient number, since it is larger than the sum of its proper divisors (13025126).

16840474 is a wasteful number, since it uses less digits than its factorization.

16840474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41517.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 16840474 is about 4103.7146586964. The cubic root of 16840474 is about 256.3213432921.

The spelling of 16840474 in words is "sixteen million, eight hundred forty thousand, four hundred seventy-four".